Ring-roll.



PATENTED JULY 7 1903.

D. P. OBRIBN.

RING ROLL APPLIOATION FILED APB. h 1902.

H0 MODEL.

retested July '7, 190a.

PATENT OFFICE.

DANIEL P. OBRIEN, OF WOBURN, MASSACHUSETTS;

RING-ROLL.

SPECIFICATION forming part of Letters Patent No. 733,2 64, dated July'7, 1903.

Application filed April 4, 1902. Serial No. 101,368. (No model.)

To CLZZ whom it may concern:

Be it known that I, DANIEL P. OBRIEN, a citizen of the United States,residing in \Voburn, in the county of Middlesex and State ofMassachusetts, have invented an Improvement in Ring-Rolls, of which thefollowing description, in connection with the accompanying drawing, is aspecification, like letters on the drawing representing like parts.

This invention relates to a ring-roll of the character now commonlyemployed on beltknife splitting-machines and comprising an inner ringand an outer ring, within the circumference of which latter the innerring is located, said rings being disconnected, so that the outer ringcan move bodily toward and from the inner ring and independent thereof.In practice a plurality of sets of rings are mounted on a shaft or rod,and the rings of larger diameter are designed to form a sectionalfeed-roll, which engages one surface of the leather or other materialbeing split and is revolved by frictional contact with a bedroll. Therings of larger diameter are bodily movable in a radial direction withrelation to the shaft or rod on which the inner rings are mounted, so asto compensate for unevenness in the hide or skin being split.

In practice with splitting-machines provided with ring-rolls as nowconstructed and such as above referred to great difficulty has beenexperienced in feeding the hide or skin, which is especially true whenthe hide or skin is moist or wet, owing to the fact that the ringrollrefuses to turn or turns irregularly, thereby effecting an irregularfeed of the hide, which results in an uneven splitting of the said hide.

Recently it has been attempted to split green hides, which are slimy andwet, and the defects above referred to are emphasized when this class ofhides are put through the splitting-machine.

- This invention has for its object to provide a ring-roll with whichthe objectionable features above referred to may be avoided, and forthis purpose I have made provision for positively rotating both rings ormembers of the ring-roll without interfering with the bodily movementradially of the outer ring or member to compensate for unevenness of thematerial being acted upon.

In the present instance I have illustrated one embodiment of thisinvention; but I do not desire to limit my invention to the particularconstruction shown.

The drawing represents in section and elevation asuflicient portion of-abelt-knife splitting-machine embodying this invention to enable it to beunderstood.

Referring to the drawing, (1, represents the bed-roll; b, the rubbercover therefor; c, the pressure-roll; d, the table upon which the hide,skin, or leather is placed; c, the guides for the belt-knife f, and gthe guide or support for the lower split of the material. These partsare and may be of any suitable or usual construction, such as found inbeltknife splitting-machines as now commonly constructed. Intermediatethe pressure-roll c and the bed-roll a is a ring-roll, which inaccordance with this invention is positively driven, and this result maybe accomplished, as shown, by operatively connecting the outer member orring h with the inner member or ring 1', which is rendered fast on itsshaft j by a key 7; or in any other suitable manner. The connectionbetween the members or rings h '0' may be eifected, as shown, by meansof a piece m, of spring-steel or other metal, riveted or otherwisefastened at one end to the inner circumference of the outer member orring and at its other end to the outer circumference of the inner ringor member, so that rotation of the shaft j produces rotation of theinner ring 2' and also rotation of the outer ring h, while at the sametime the outer ring is free to move radially with relation to the innerring and its shaft, so as to compensate for unevenness in the hide orskin or other material being split.

By providing a ring-roll which is positively driven or rotated, whilehaving the function of yielding to compensate for unevenness in the hideor skin, the action of the splittingmachine is rendered positive andsure and superior work is obtained, as the hide, skin, or leather,either wet or dry, is properly fed through the machine and presented tothe knife in such manner as to insure the work being split in a uniformmanner without danger of injuring or spoiling the work.

I have herein shown one construction of positively-driven ring-rollwhich I may prefer; but believing myself to be the first to provide aring-roll in which the inner member is positively attached to the outermember I do not desire to limit my invention to the particularconstruction shown.

I claim 1. In a machine of the character described, a shaft, a ring-rollmounted thereon and comprising a ring fast on the shaft and a largerring loose on said shaft to move bodily radially with relation to saidshaft, and means attached to the said rings for connecting the largerring With the smaller ring to effect rotation of the larger ring whilepermitting it to move radially, substantially as described.

2. In a machine of the class described, a ring-roll comprising an innermember or ring, an outer member or ring movable bodily toward and fromsaid inner member or ring, and means within the circumference of theouter member for directly connecting itwith the inner member to enablethe outer member to be rotated by rotation of the inner member Withoutinterfering with the bodily movement of the outer member, substantiallyas described.

3. In a machine of the class described, a ring-roll comprising an innermember or ring, an outer member or ring movable bodily toward and fromsaid inner member or ring, and a piece of spring metal secured to theouter ring and to the inner ring, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two sn bscribing witnesses.

DANIEL P. OBRIEN.

Witnesses:

JAs. H. CHURCHILL, J. MURPHY.

